/ Dictionary / Index F fossa: Meaning and Definition of Find definitions for: fos•sa Pronunciation: (fos'u), [key] — pl. fos•sae a pit, cavity, or depression, as in a bone. fos•sa Pronunciation: (fos'u), [key] — n. a forest-dwelling genetlike mammal, Cryptoprocta ferox, of the civet family, native to Madagascar, with a short coat of white, black, gray, or brown: now rare. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fossa (Thesaurus) Foss fossarian Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language